Designed for pre-mix applications as lean as 100:1 ratios or richer. Improves throttle response and lowers or eliminates smoke. Minimizes deposit formation and lowers emissions. Performance emphasis on the cooler operations of water-cooled motors.
Package sizes include:
8-oz. Bottle
8-oz. Bottles (case of 12)
1-Quart Bottle
1-Quart Bottles (case of 12)
30-Gallon Drum
55-Gallon Drum
Product Code: ATO •
Brand: AMSOIL
Product DetailsTech DataReviews & Rating
Product Applications
Outboard Synthetic 2-Stroke Oil is specifically designed for pre-mix water-cooled two-stroke outboard motors, personal watercraft and jet boats.
Outboard Synthetic 2-Stroke Oil is recommended for 100:1 mix ratios in normal service. Richer mix ratios may be used where desired, although certain benefits such as reduced smoke and deposits may be compromised.
RATIO
OIL
FUEL
32:1
4.0 oz.
1 US GAL
40:1
3.2 oz.
1 US GAL
50:1
2.6 oz.
1 US GAL
80:1
1.6 oz.
1 US GAL
100:1
1.3 oz.
1 US GAL
Product Description
Specifically designed for outboard motors, Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil contains a heavy dose of low-temperature dispersant additives that excel at reducing varnish and carbon deposit formation in water-cooled motors. Its low-smoke, low-odor, low-toxicity properties produce fewer emissions at 100:1 mix ratios than oils mixed at 50:1, benefitting operators and the environment. Outboard Synthetic 2-Stroke Oil is formulated to prevent "oil loading" and plug fouling for rapid throttle response, making it ideal for trolling motors. Recommended for pre-mix use where TC-W3 is specified.
AMSOIL Synthetic 2-Stroke Oil has been providing improved performance and protection in two-stroke engines since 1973. Trust the extensive experience of AMSOIL, The First in Synthetics®, to do the best job protecting your engine.
Engine Protection
Outboard Synthetic 2-Stroke Oil provides premium protection and performance at 100:1 mix ratios. It is formulated for hot-operating two-stroke outboard motors, effectively fighting carbon/deposit formation and preventing ring sticking.
Smokeless Operation
Outboard Synthetic 2-Stroke Oil's synthetic formulation burns clean. When mixed at 100:1, smoke is virtually undetectable. Boaters subjected to smoke and fumes benefit from these low-emission properties.
Excellent lubricity and cleanliness properties
Controls friction and helps prevent wear, plug fouling, ring sticking and exhaust port blocking
Improves throttle response
Lowers or eliminates smoke
Delivers outstanding protection and performance at lean mix ratios
Anti-rust formulation counteracts the damp environments often encountered in outboard applications
HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).
Started using Amsoil 100:1 outboard oil two years ago. It considerably reduced the smoke and idle load up on my 1990 Johnson GT150. Now she purrs like a kitten on idle and roars to life under power! Love this stuff. Highly recommend.
This 100:1 premix works great for my 115 outboard. I disconnected the oil injection before it failed and ruined my motor. Now converting my jet skis to premix.
I have been repairing outboards for over 35 years and the outboards that this product shines at are the OMC'S Johnson and Evinrude,s they have a vro system that fail and burn up powerheads I have converted them to premix 100 to 1 before and after burn downs and have great reviews as to them running better than they did new. They start better idle better and all around run better with less smok.
The oiler for my outboard has been removed and I premix the gas and oil. I have been running the 100 to 1 AMSOIL at a100 to 1 ratio for 6 years or more. I push the little 60 hard and have had no oil related problems. There is virtually no smoke and I have never fouled a plug. This is a great product. I think it has extended the life of the engine because the mechanics I consult tell me most of these motor are done in when the oiler fails. Its a great product that I will continue to use.
I used this on 2 boats both being 2 strokes. 1 is a bass boat with a 150 merc. Other is a offshore boat with twin 175 mercs. In both cases I started with 80:1 mix being new to Ams-oil. After intensive research I went for the 100:1 mix. Both boats smoke much less. They dont load up like before idling and trolling. Did a compression check on all 3 motors and all stayed the same. I will continue using this.
Ran this oil in my yamaha 50 hp two stroke. Ran smooth and flawlessly. Less smoke and plugs came out clean. Switching all my premix outboards to this oil .
I purchased this to use in my 1993 Johnson 150. Trying to cut down on smoke. It has helped some. I can say the idle seems much better and the obvious use of oil is cut in half.
I really like the smaller container. I don't use my boat that much and a quart size bottle lasts for more than a year. The smaller container is just right for me.
I used this oil for several years... ran out and bought some Mercury synthetic oil. My engine blew up a month later. So I'm back to the Amsoil and I have to say I think it's the best product on the market. If you have a V-6 that you run at high rpm and you want peace of mind, then I would buy this oil and nothing else. No smoke, excellent low idle, high speed confidence.
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Reviewed by Gerald:
Great product
Use in my outboard, no smoke , plugs clean, easy starting, can't ask for more. Have used for many years.